scholarly journals Influences of TiAlN Coating on Cutting Temperature during Orthogonal Machining H13 Hardened Steel

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 355 ◽  
Author(s):  
Guangchao Hao ◽  
Zhanqiang Liu ◽  
Xiaoliang Liang ◽  
Jinfu Zhao
Keyword(s):  
Cutting Tool ◽  
Cutting Temperature ◽  
Contact Length ◽  
Hardened Steel ◽  
Tialn Coating ◽  
Orthogonal Machining ◽  
Coated Tools ◽  
Cutting Heat ◽  
Coated Tool ◽  
The Coefficient Of Friction

TiAlN has been widely used in cutting tool coating due to its excellent mechanical and thermal performances. However, the research on the TiAlN coating effect on cutting temperature is not comprehensive enough. In this paper, the friction tests at elevated temperature and hard machining H13 hardened steel tests are conducted by using TiAlN coated tools and uncoated tools, respectively. The results of using TiAlN coated tools are compared with those from using uncoated tools. It is found that the coefficient of friction (COF) between TiAlN coated tool and H13 hardened steel is reduced to 0.63 at 800 °C. The COF value is 0.75 for uncoated tool. Under the same cutting conditions, the TiAlN coating shortens tool-chip contact length. The tangential cutting forces and cutting zone temperatures are decreased with smaller COF and shorter tool-chip contact length. Due to the lower thermal conductivities of TiAlN coating and the Al2O3 oxide layer formatted at tool rake face, the cutting heat conducted into cutting tool substrate was reduced. The cutting temperatures in TiAlN coated tool substrate are decreased by at least 10.68% in this study. The TiAlN coating reduces the cutting temperature by decreasing the cutting heat generation and conduction.

Essential Research in Machining Difficult-to-Machine Materials for Advancing MQL Cutting Technology with a Newly Developed Coated Tool

2014 ◽  
Vol 1017 ◽  
pp. 329-333
Author(s):  
Syunki Shimada ◽  
Masao Kohzaki
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Cutting Tool ◽  
Minimum Quantity Lubrication ◽  
High Wear Resistance ◽  
Cutting Resistance ◽  
Coated Tools ◽  
Coated Tool ◽  
Cutting Experiments ◽  
Lubricating Properties

This study is developing environmentally friendly cutting technologies of difficult-to-machine materials by MQL (Minimum Quantity Lubrication) cutting with Ti-B coated tools. In this research, we performed cutting experiments of difficult-to-machine materials in dry, MQL and wet conditions with non-coated tools. Cutting resistance in the MQL cutting was almost the same as that in the wet cutting. Moreover, damage of the cutting tool was not observed after the MQL cutting. Therefore the MQL cutting is expected to become an advanced cutting technology by using Ti-B coated tools because Ti-B film had high temperature lubricating properties and high wear resistance.

scholarly journals Cutting Performance Evaluation of the Coated Tools in High-Speed Milling of AISI 4340 Steel

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3266 ◽  
Author(s):  
Yuan Li ◽  
Guangming Zheng ◽  
Xiang Cheng ◽  
Xianhai Yang ◽  
Rufeng Xu ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Cutting Force ◽  
High Speed ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Performance ◽  
High Speed Milling ◽  
Coated Tools ◽  
Coated Tool ◽  
Aisi 4340

The cutting performance of cutting tools in high-speed machining (HSM) is an important factor restricting the machined surface integrity of the workpiece. The HSM of AISI 4340 is carried out by using coated tools with TiN/TiCN/TiAlN multi-coating, TiAlN + TiN coating, TiCN + NbC coating, and AlTiN coating, respectively. The cutting performance evaluation of the coated tools is revealed by the chip morphology, cutting force, cutting temperature, and tool wear. The results show that the serration and shear slip of the chips become more clear with the cutting speed. The lower cutting force and cutting temperature are achieved by the TiN/TiCN/TiAlN multi-coated tool. The flank wear was the dominant wear form in the milling process of AISI 4340. The dominant wear mechanisms of the coated tools include the crater wear, coating chipping, adhesion, abrasion, and diffusion. In general, a TiN/TiCN/TiAlN multi-coated tool is the most suitable tool for high-speed milling of AISI 4340, due to the lower cutting force, the lower cutting temperature, and the high resistance of the element diffusion.

scholarly journals Effect of Volcano-like Textured Coated Tools on Machining of Ti6Al4V: An Experimental and Simulative Investigation

2021 ◽  
Author(s):  
Yun Zhou ◽  
Yonghong Fu ◽  
Jie Yang
Keyword(s):  
Tool Wear ◽  
Cutting Temperature ◽  
Chip Morphology ◽  
Material Model ◽  
Ti6al4v Alloy ◽  
Cutting Conditions ◽  
Vacuum Arc ◽  
Rake Face ◽  
Coated Tools ◽  
Coated Tool

Abstract In this work, the main aim is to reduce the adhesion and wear that happened during machining of the Ti6Al4V alloy by employing volcano-like texture on the rake face of coated tool. A combination of experimental and simulative investigation was adopted. DEFORM-3D software with updated Lagrangian formulation was used for numerical simulation, and the thermo-mechanical analysis was performed using Johnson-Cook material model to predict the cutting temperature, cutting forces, chip morphology and tool wear. In cutting experiments, volcano-like textures with different area densities (10%, 20%, 30%) were fabricated by fiber laser on the rake face of cemented carbide tools close to the main cutting edge. Then, these textured tools were deposited with CrAlN coating through cathodic vacuum arc ion plating technique. Experiments in cutting Ti6Al4V alloy were carried out with the textured coated tools and non-textured coated tool under dry and wet cutting conditions. Then, the chip morphology, chip size and tool wear were investigated. The results showed that textured coated tools were superior to conventional tool. Especially in wet cutting, compared with those of non-textured coated tool, the adhesion area and the chip curling radius of the coated tool with texture area density of 20% (VCT2) were reduced by 31.2% and 49.7%, respectively. Therefore, VCT2 tool showed a better cutting performance. Finally, the mechanisms of textured coated tools under dry and wet cutting conditions were proposed.

Experimental Determination of Cutting Temperature and Force when Turning Assab Steel with Coated Carbide Inserts

2009 ◽  
Vol 83-86 ◽  
pp. 993-1001 ◽  
Author(s):  
Imtiaz Ahmed Choudhury ◽  
S.W. Gan ◽  
Nukman Yusoff
Keyword(s):  
Cutting Temperature ◽  
Coated Tools ◽  
Factors Influencing ◽  
Coated Tool ◽  
Flank Face ◽  
Coated Carbide ◽  
Carbide Inserts ◽  
Coated Carbide Tools ◽  
Steel Cutting

The study is about an experimental investigation of the different factors influencing the temperature occurring at the coating/substrate and chip interface when machining Assab steels 760 and DF2 with two different coated carbide tools. Results show that tool temperature was higher when turning Assab steel 760. Temperature along the major flank face was higher that that at the minor flank. However, the magnitude of temperature was lower than expected with maximum only around 260 oC near the tool tip. The performance of Al2O3 coated WC inserts appeared to be better compared to TiN coated WC inserts. The cutting temperature was lower with alumina coated tools. While turning Assab DF2 steel, cutting temperature was lower compared to Assab 760 steel for the same coated tool.

Finite Element Investigation of Cutting Performance of Cr/W-DLC/DLC Composite Coated Cutting Tool

2021 ◽  
Author(s):  
Tianmei Hao ◽  
Jin Du ◽  
Xue Zhang ◽  
Guosheng Su ◽  
Peirong Zhang ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Cutting Force ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Cutting Performance ◽  
Interface Temperature ◽  
Machined Surface ◽  
Heat Partition ◽  
Coated Tools ◽  
Cutting Deformation

Abstract Coupled with a thermo-mechanical metal cutting process, rapid tool wear, higher surface roughness and mass heat are caused by the rapid plastic deformation of the workpiece and by the friction along the tool-chip interface. This phenomenon is more predominant in the machining of difficult-to-cut materials. DLC film has been applied as coating material in the machining of difficult-to-cut materials, and shows a good cutting performance. In this study, Cr/W-DLC/DLC coated tools were compared with other three coated tools (i.e., TiC-, TiAlN-, Al 2 O 3 -) to investigate the cutting performance in the machining of Al-Si alloy (AC9B). In addition, the influence of Cr/W-DLC/DLC coated tools on the cutting performance under different cutting speeds was studied. Cutting force, cutting temperature, heat transfer coefficient of the rake face of the tool, cutting deformation rate, plastic deformation of machined surface, the interface temperature and stress were investigated numerically based on Finite Element Method (FEM). Actual cutting experiments were carried out to the verification of the FEM models by means of the cutting force and cutting temperature measurement. The investigation results showed that Cr/W-DLC/DLC coated tools has the lowest cutting force and cutting temperature, good cutting deformation characteristics and lower coating-substrate interface temperature and stress, however appears the maximum value of heat partition coefficient into the cutting tool. With the increasing of cutting speeds, cutting force and cutting temperature showed an increase trend, while the plastic deformation depth of machined surface and heat partition into cutting tool all showed a decrease trend. This investigation can provide the theory basis or technical guidance for the cutting practice of Cr/W-DLC/DLC coated tools.

Experiment on Optimal Selecting for Cutting Tools in Milling of High Hardened Steel

2012 ◽  
Vol 723 ◽  
pp. 305-310
Author(s):  
Kun Peng Zhang ◽  
Cheng Yong Wang ◽  
Y.N. Hu ◽  
Y.X. Song
Keyword(s):  
Cutting Tools ◽  
Cutting Temperature ◽  
High Hardness ◽  
Hardened Steel ◽  
Tool Geometry ◽  
Coated Tools ◽  
Processing Cost ◽  
Cutting Vibration ◽  
Milling Characteristics ◽  
Cutting Experiments

In this paper, with milling characteristics of high hardness hardened steel, we choice six different coated tools to made cutting experiments on high hardness hardened steel Cr12MoV (HRC65). In this stage, through the analysis of cutting force, cutting temperature, cutting vibration, machined quality and tool wear, we have elected the preferred tool and tool geometry parameters for this processing stage. The results of the study show that: TiAlSiN is the most suitable for Cr12MoV (HRC65), which helps to improve cutting processing productivity, prolong tool life, and enhance processing quality and reduce the processing cost.

Numerical Investigation of the Derivative Cutting Effect of Micro-Textured Tools in Dry Cutting of Ti6Al4V

2020 ◽  
Vol 977 ◽  
pp. 123-129
Author(s):  
Yu Liu ◽  
Xin Liu ◽  
Lei Li ◽  
Yuan Tian
Keyword(s):  
Cutting Forces ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Fem Simulation ◽  
Cutting Parameters ◽  
Contact Length ◽  
Shear Angle ◽  
Dry Cutting ◽  
Cutting Effect ◽  
Derivative Cutting

In this study, FEM simulation of titanium alloy machining with micro-textured tool using Thirdwave AdvantEdge. Micro-scale textures on the rake face of the cutting tool is a single linear groove parallel to the cutting edge. Viewing simulation results ,derivative cutting did occur under the cutting parameters in this study. The tool-chip contact length decreases due to the existence of the micro-textures. Shear angle increases which indicates smaller deformation of the cutting layer and thus smaller cutting forces and cutting temperature. However, the derivative cutting effect increases the variations of the cutting forces. Therefore, strength of the cutting tool must be taken into consideration during the designation of the micro-textured cutting tool.

A Study of the Normal and Shear Stresses on a Cutting Tool

1966 ◽  
Vol 88 (1) ◽  
pp. 51-61 ◽  
Author(s):  
T. C. Hsu
Keyword(s):  
Metal Cutting ◽  
Cutting Tool ◽  
Contact Length ◽  
Depth Of Cut ◽  
Shear Stresses ◽  
Simple Manner ◽  
Tool Edge ◽  
The Coefficient Of Friction ◽  
Tangential Forces ◽  
Normal And Shear Stresses

This paper contains an explanation for the variation of the “coefficient of friction” in metal cutting. The chip partly sticks to and partly slides over the tool and only in the latter region can friction occur. In the experiments, the contact area between the chip and the tool is controlled and the change in the size of the sticking region is observed. The ploughing force acting on the tool edge is taken into account and the force acting on the tool face is determined. It is found that the force on the tool face varies with the depth of cut and the contact length in a simple manner. From the variation of the normal and tangential forces the stress distribution on the tool face is deduced.

PCBN Tool Wear Mechanism in Interrupted Hard Turning SAE8822 Hardened Steel

2006 ◽  
Vol 315-316 ◽  
pp. 329-333 ◽  
Author(s):  
Lu Xiao ◽  
M.X. Zeng ◽  
Dong Hui Wen ◽  
H.H. Wu ◽  
B.H. Si
Keyword(s):  
Wear Mechanism ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Hardened Steel ◽  
Wear Behaviour ◽  
Edge Chipping ◽  
Pcbn Tool ◽  
Hard Part ◽  
Tool Wear Mechanism ◽  
And Diffusion

The wear behaviour in the precision interrupted hard part turning SAE8822 case hardened steel by BN250 PCBN cutting tool was studied. Experimental results showed that the main wear mechanism for the PCBN tool was the edge chipping by the fluctuation of cutting forces and cutting temperature. The oxidization and diffusion of the elements between workpiece and PCBN tool decrease the bonded strength between binder and cBN crystal, then lead to the damage of PCBN cutting tool.

scholarly journals Modeling of Thermophysical Phenomena When Cutting with Coated Tools

2021 ◽  
Vol 248 ◽  
pp. 04019
Author(s):  
Marina Volosova ◽  
Artur Migranov ◽  
Maksim Rai
Keyword(s):  
Cutting Tool ◽  
Structural Phase ◽  
Experimental Studies ◽  
Cutting Temperature ◽  
Shielding Effect ◽  
Mechanism Of Formation ◽  
Wear Resistant Coatings ◽  
Coated Tools ◽  
Layer Composite ◽  
Blade Cutting

The results of computer simulation of thermophysical phenomena in the contact zone during blade cutting of metals with multi-layer composite wear-resistant coatings that ensure the adaptability of the cutting wedge to friction conditions are presented. On-site experimental studies of the cutting temperature during turning with various coatings, structural-phase analysis of the surface layer of the cutting tool to explain the mechanism of formation of secondary structures with a shielding effect – the effect of selforganization.

Sign in / Sign up

Export Citation Format

Share Document